body{
    width: 800px;
    margin: auto;
    background-color: lightsteelblue;
}

header{
	padding-top:40px;
    padding-bottom:40px;
	display: grid;
	grid-template-columns: 60% 25%;
    justify-content: space-between;
}


header h3{
    text-align: right;
}


.contener{
    border:solid black;
    border-radius: 25px;
    display: grid;
    grid-template-columns: 60% 25%;
    justify-content: space-between;
    padding:15px;
}
.contener h2{
    text-align: center;
    margin-bottom: 30px;
} 
.jour{
    margin-top: 10px;
    border: solid 2px black;
    border-radius: 25px;
    padding:10px;
}

nav h2{
    text-align: center;
}
 ul{
     list-style: disc;
 }

 ul li{
     margin-top: 1em;
 }
 ul li a {
     text-decoration: none;
     color: black;
 }